glsl: Add uniform_locations_assigned parameter to do_dead_code opt pass
[mesa.git] / src / mesa / main / texcompress_s3tc.c
index d17e18da6b556c9fc9c5a2e728eef6679e0010b5..ed7eae4f46d2e84cdd35be4e740c17a29a9af60e 100644 (file)
 #include "glheader.h"
 #include "imports.h"
 #include "colormac.h"
-#include "context.h"
-#include "convolve.h"
 #include "dlopen.h"
 #include "image.h"
+#include "macros.h"
+#include "mfeatures.h"
+#include "mtypes.h"
 #include "texcompress.h"
-#include "texformat.h"
+#include "texcompress_s3tc.h"
 #include "texstore.h"
+#include "swrast/s_context.h"
 
-#ifdef __MINGW32__
+
+#if FEATURE_texture_s3tc
+
+
+#if defined(_WIN32) || defined(WIN32)
 #define DXTN_LIBNAME "dxtn.dll"
 #define RTLD_LAZY 0
 #define RTLD_GLOBAL 0
@@ -60,7 +66,7 @@
  * linear RGB value in [0, 1].
  * Implemented with a 256-entry lookup table.
  */
-static INLINE GLfloat
+static inline GLfloat
 nonlinear_to_linear(GLubyte cs8)
 {
    static GLfloat table[256];
@@ -74,7 +80,7 @@ nonlinear_to_linear(GLubyte cs8)
             table[i] = cs / 12.92f;
          }
          else {
-            table[i] = (GLfloat) _mesa_pow((cs + 0.055) / 1.055, 2.4);
+            table[i] = (GLfloat) pow((cs + 0.055) / 1.055, 2.4);
          }
       }
       tableReady = GL_TRUE;
@@ -91,7 +97,7 @@ dxtFetchTexelFuncExt fetch_ext_rgba_dxt3 = NULL;
 dxtFetchTexelFuncExt fetch_ext_rgba_dxt5 = NULL;
 
 typedef void (*dxtCompressTexFuncExt)(GLint srccomps, GLint width,
-                                      GLint height, const GLchan *srcPixData,
+                                      GLint height, const GLubyte *srcPixData,
                                       GLenum destformat, GLubyte *dest,
                                       GLint dstRowStride);
 
@@ -101,7 +107,7 @@ static void *dxtlibhandle = NULL;
 
 
 void
-_mesa_init_texture_s3tc( GLcontext *ctx )
+_mesa_init_texture_s3tc( struct gl_context *ctx )
 {
    /* called during context initialization */
    ctx->Mesa_DXTn = GL_FALSE;
@@ -145,7 +151,6 @@ _mesa_init_texture_s3tc( GLcontext *ctx )
    }
    if (dxtlibhandle) {
       ctx->Mesa_DXTn = GL_TRUE;
-      _mesa_warning(ctx, "software DXTn compression/decompression available");
    }
 #else
    (void) ctx;
@@ -153,51 +158,48 @@ _mesa_init_texture_s3tc( GLcontext *ctx )
 }
 
 /**
- * Called via TexFormat->StoreImage to store an RGB_DXT1 texture.
+ * Store user's image in rgb_dxt1 format.
  */
-static GLboolean
-texstore_rgb_dxt1(TEXSTORE_PARAMS)
+GLboolean
+_mesa_texstore_rgb_dxt1(TEXSTORE_PARAMS)
 {
-   const GLchan *pixels;
-   GLint srcRowStride;
+   const GLubyte *pixels;
    GLubyte *dst;
    const GLint texWidth = dstRowStride * 4 / 8; /* a bit of a hack */
-   const GLchan *tempImage = NULL;
+   const GLubyte *tempImage = NULL;
 
-   ASSERT(dstFormat == &_mesa_texformat_rgb_dxt1);
+   ASSERT(dstFormat == MESA_FORMAT_RGB_DXT1 ||
+          dstFormat == MESA_FORMAT_SRGB_DXT1);
    ASSERT(dstXoffset % 4 == 0);
    ASSERT(dstYoffset % 4 == 0);
    ASSERT(dstZoffset % 4 == 0);
    (void) dstZoffset;
-   (void) dstImageOffsets;
 
    if (srcFormat != GL_RGB ||
-       srcType != CHAN_TYPE ||
+       srcType != GL_UNSIGNED_BYTE ||
        ctx->_ImageTransferState ||
+       srcPacking->RowLength != srcWidth ||
        srcPacking->SwapBytes) {
-      /* convert image to RGB/GLchan */
-      tempImage = _mesa_make_temp_chan_image(ctx, dims,
+      /* convert image to RGB/GLubyte */
+      tempImage = _mesa_make_temp_ubyte_image(ctx, dims,
                                              baseInternalFormat,
-                                             dstFormat->BaseFormat,
+                                             _mesa_get_format_base_format(dstFormat),
                                              srcWidth, srcHeight, srcDepth,
                                              srcFormat, srcType, srcAddr,
                                              srcPacking);
       if (!tempImage)
          return GL_FALSE; /* out of memory */
-      _mesa_adjust_image_for_convolution(ctx, dims, &srcWidth, &srcHeight);
       pixels = tempImage;
-      srcRowStride = 3 * srcWidth;
       srcFormat = GL_RGB;
    }
    else {
-      pixels = (const GLchan *) srcAddr;
-      srcRowStride = _mesa_image_row_stride(srcPacking, srcWidth, srcFormat,
-                                            srcType) / sizeof(GLchan);
+      pixels = _mesa_image_address2d(srcPacking, srcAddr, srcWidth, srcHeight,
+                                     srcFormat, srcType, 0, 0);
    }
 
    dst = _mesa_compressed_image_address(dstXoffset, dstYoffset, 0,
-                                        dstFormat->MesaFormat,
-                                        texWidth, (GLubyte *) dstAddr);
+                                        dstFormat,
+                                        texWidth, dstSlices[0]);
 
    if (ext_tx_compress_dxtn) {
       (*ext_tx_compress_dxtn)(3, srcWidth, srcHeight, pixels,
@@ -205,557 +207,355 @@ texstore_rgb_dxt1(TEXSTORE_PARAMS)
                               dst, dstRowStride);
    }
    else {
-      _mesa_warning(ctx, "external dxt library not available");
+      _mesa_warning(ctx, "external dxt library not available: texstore_rgb_dxt1");
    }
 
    if (tempImage)
-      _mesa_free((void *) tempImage);
+      free((void *) tempImage);
 
    return GL_TRUE;
 }
 
 
 /**
- * Called via TexFormat->StoreImage to store an RGBA_DXT1 texture.
+ * Store user's image in rgba_dxt1 format.
  */
-static GLboolean
-texstore_rgba_dxt1(TEXSTORE_PARAMS)
+GLboolean
+_mesa_texstore_rgba_dxt1(TEXSTORE_PARAMS)
 {
-   const GLchan *pixels;
-   GLint srcRowStride;
+   const GLubyte *pixels;
    GLubyte *dst;
    const GLint texWidth = dstRowStride * 4 / 8; /* a bit of a hack */
-   const GLchan *tempImage = NULL;
+   const GLubyte *tempImage = NULL;
 
-   ASSERT(dstFormat == &_mesa_texformat_rgba_dxt1);
+   ASSERT(dstFormat == MESA_FORMAT_RGBA_DXT1 ||
+          dstFormat == MESA_FORMAT_SRGBA_DXT1);
    ASSERT(dstXoffset % 4 == 0);
    ASSERT(dstYoffset % 4 == 0);
    ASSERT(dstZoffset % 4 == 0);
    (void) dstZoffset;
-   (void) dstImageOffsets;
 
    if (srcFormat != GL_RGBA ||
-       srcType != CHAN_TYPE ||
+       srcType != GL_UNSIGNED_BYTE ||
        ctx->_ImageTransferState ||
+       srcPacking->RowLength != srcWidth ||
        srcPacking->SwapBytes) {
-      /* convert image to RGBA/GLchan */
-      tempImage = _mesa_make_temp_chan_image(ctx, dims,
+      /* convert image to RGBA/GLubyte */
+      tempImage = _mesa_make_temp_ubyte_image(ctx, dims,
                                              baseInternalFormat,
-                                             dstFormat->BaseFormat,
+                                             _mesa_get_format_base_format(dstFormat),
                                              srcWidth, srcHeight, srcDepth,
                                              srcFormat, srcType, srcAddr,
                                              srcPacking);
       if (!tempImage)
          return GL_FALSE; /* out of memory */
-      _mesa_adjust_image_for_convolution(ctx, dims, &srcWidth, &srcHeight);
       pixels = tempImage;
-      srcRowStride = 4 * srcWidth;
       srcFormat = GL_RGBA;
    }
    else {
-      pixels = (const GLchan *) srcAddr;
-      srcRowStride = _mesa_image_row_stride(srcPacking, srcWidth, srcFormat,
-                                            srcType) / sizeof(GLchan);
+      pixels = _mesa_image_address2d(srcPacking, srcAddr, srcWidth, srcHeight,
+                                     srcFormat, srcType, 0, 0);
    }
 
    dst = _mesa_compressed_image_address(dstXoffset, dstYoffset, 0,
-                                        dstFormat->MesaFormat,
-                                        texWidth, (GLubyte *) dstAddr);
+                                        dstFormat,
+                                        texWidth, dstSlices[0]);
    if (ext_tx_compress_dxtn) {
       (*ext_tx_compress_dxtn)(4, srcWidth, srcHeight, pixels,
                               GL_COMPRESSED_RGBA_S3TC_DXT1_EXT,
                               dst, dstRowStride);
    }
    else {
-      _mesa_warning(ctx, "external dxt library not available");
+      _mesa_warning(ctx, "external dxt library not available: texstore_rgba_dxt1");
    }
 
    if (tempImage)
-      _mesa_free((void*) tempImage);
+      free((void*) tempImage);
 
    return GL_TRUE;
 }
 
 
 /**
- * Called via TexFormat->StoreImage to store an RGBA_DXT3 texture.
+ * Store user's image in rgba_dxt3 format.
  */
-static GLboolean
-texstore_rgba_dxt3(TEXSTORE_PARAMS)
+GLboolean
+_mesa_texstore_rgba_dxt3(TEXSTORE_PARAMS)
 {
-   const GLchan *pixels;
-   GLint srcRowStride;
+   const GLubyte *pixels;
    GLubyte *dst;
    const GLint texWidth = dstRowStride * 4 / 16; /* a bit of a hack */
-   const GLchan *tempImage = NULL;
+   const GLubyte *tempImage = NULL;
 
-   ASSERT(dstFormat == &_mesa_texformat_rgba_dxt3);
+   ASSERT(dstFormat == MESA_FORMAT_RGBA_DXT3 ||
+          dstFormat == MESA_FORMAT_SRGBA_DXT3);
    ASSERT(dstXoffset % 4 == 0);
    ASSERT(dstYoffset % 4 == 0);
    ASSERT(dstZoffset % 4 == 0);
    (void) dstZoffset;
-   (void) dstImageOffsets;
 
    if (srcFormat != GL_RGBA ||
-       srcType != CHAN_TYPE ||
+       srcType != GL_UNSIGNED_BYTE ||
        ctx->_ImageTransferState ||
+       srcPacking->RowLength != srcWidth ||
        srcPacking->SwapBytes) {
-      /* convert image to RGBA/GLchan */
-      tempImage = _mesa_make_temp_chan_image(ctx, dims,
+      /* convert image to RGBA/GLubyte */
+      tempImage = _mesa_make_temp_ubyte_image(ctx, dims,
                                              baseInternalFormat,
-                                             dstFormat->BaseFormat,
+                                             _mesa_get_format_base_format(dstFormat),
                                              srcWidth, srcHeight, srcDepth,
                                              srcFormat, srcType, srcAddr,
                                              srcPacking);
       if (!tempImage)
          return GL_FALSE; /* out of memory */
-      _mesa_adjust_image_for_convolution(ctx, dims, &srcWidth, &srcHeight);
       pixels = tempImage;
-      srcRowStride = 4 * srcWidth;
    }
    else {
-      pixels = (const GLchan *) srcAddr;
-      srcRowStride = _mesa_image_row_stride(srcPacking, srcWidth, srcFormat,
-                                            srcType) / sizeof(GLchan);
+      pixels = _mesa_image_address2d(srcPacking, srcAddr, srcWidth, srcHeight,
+                                     srcFormat, srcType, 0, 0);
    }
 
    dst = _mesa_compressed_image_address(dstXoffset, dstYoffset, 0,
-                                        dstFormat->MesaFormat,
-                                        texWidth, (GLubyte *) dstAddr);
+                                        dstFormat,
+                                        texWidth, dstSlices[0]);
    if (ext_tx_compress_dxtn) {
       (*ext_tx_compress_dxtn)(4, srcWidth, srcHeight, pixels,
                               GL_COMPRESSED_RGBA_S3TC_DXT3_EXT,
                               dst, dstRowStride);
    }
    else {
-      _mesa_warning(ctx, "external dxt library not available");
+      _mesa_warning(ctx, "external dxt library not available: texstore_rgba_dxt3");
    }
 
    if (tempImage)
-      _mesa_free((void *) tempImage);
+      free((void *) tempImage);
 
    return GL_TRUE;
 }
 
 
 /**
- * Called via TexFormat->StoreImage to store an RGBA_DXT5 texture.
+ * Store user's image in rgba_dxt5 format.
  */
-static GLboolean
-texstore_rgba_dxt5(TEXSTORE_PARAMS)
+GLboolean
+_mesa_texstore_rgba_dxt5(TEXSTORE_PARAMS)
 {
-   const GLchan *pixels;
-   GLint srcRowStride;
+   const GLubyte *pixels;
    GLubyte *dst;
    const GLint texWidth = dstRowStride * 4 / 16; /* a bit of a hack */
-   const GLchan *tempImage = NULL;
+   const GLubyte *tempImage = NULL;
 
-   ASSERT(dstFormat == &_mesa_texformat_rgba_dxt5);
+   ASSERT(dstFormat == MESA_FORMAT_RGBA_DXT5 ||
+          dstFormat == MESA_FORMAT_SRGBA_DXT5);
    ASSERT(dstXoffset % 4 == 0);
    ASSERT(dstYoffset % 4 == 0);
    ASSERT(dstZoffset % 4 == 0);
    (void) dstZoffset;
-   (void) dstImageOffsets;
 
    if (srcFormat != GL_RGBA ||
-       srcType != CHAN_TYPE ||
+       srcType != GL_UNSIGNED_BYTE ||
        ctx->_ImageTransferState ||
+       srcPacking->RowLength != srcWidth ||
        srcPacking->SwapBytes) {
-      /* convert image to RGBA/GLchan */
-      tempImage = _mesa_make_temp_chan_image(ctx, dims,
+      /* convert image to RGBA/GLubyte */
+      tempImage = _mesa_make_temp_ubyte_image(ctx, dims,
                                              baseInternalFormat,
-                                             dstFormat->BaseFormat,
+                                            _mesa_get_format_base_format(dstFormat),
                                              srcWidth, srcHeight, srcDepth,
                                              srcFormat, srcType, srcAddr,
                                              srcPacking);
       if (!tempImage)
          return GL_FALSE; /* out of memory */
-      _mesa_adjust_image_for_convolution(ctx, dims, &srcWidth, &srcHeight);
       pixels = tempImage;
-      srcRowStride = 4 * srcWidth;
    }
    else {
-      pixels = (const GLchan *) srcAddr;
-      srcRowStride = _mesa_image_row_stride(srcPacking, srcWidth, srcFormat,
-                                            srcType) / sizeof(GLchan);
+      pixels = _mesa_image_address2d(srcPacking, srcAddr, srcWidth, srcHeight,
+                                     srcFormat, srcType, 0, 0);
    }
 
    dst = _mesa_compressed_image_address(dstXoffset, dstYoffset, 0,
-                                        dstFormat->MesaFormat,
-                                        texWidth, (GLubyte *) dstAddr);
+                                        dstFormat,
+                                        texWidth, dstSlices[0]);
    if (ext_tx_compress_dxtn) {
       (*ext_tx_compress_dxtn)(4, srcWidth, srcHeight, pixels,
                               GL_COMPRESSED_RGBA_S3TC_DXT5_EXT,
                               dst, dstRowStride);
    }
    else {
-      _mesa_warning(ctx, "external dxt library not available");
+      _mesa_warning(ctx, "external dxt library not available: texstore_rgba_dxt5");
    }
 
    if (tempImage)
-      _mesa_free((void *) tempImage);
+      free((void *) tempImage);
 
    return GL_TRUE;
 }
 
 
 static void
-fetch_texel_2d_rgb_dxt1( const struct gl_texture_image *texImage,
-                         GLint i, GLint j, GLint k, GLchan *texel )
+fetch_texel_2d_rgb_dxt1( const struct swrast_texture_image *texImage,
+                         GLint i, GLint j, GLint k, GLubyte *texel )
 {
    (void) k;
    if (fetch_ext_rgb_dxt1) {
-      ASSERT (sizeof(GLchan) == sizeof(GLubyte));
       fetch_ext_rgb_dxt1(texImage->RowStride,
-                         (GLubyte *)(texImage)->Data, i, j, texel);
+                         texImage->Data, i, j, texel);
    }
    else
-      _mesa_debug(NULL, "attempted to decode s3tc texture without library available\n");
+      _mesa_debug(NULL, "attempted to decode s3tc texture without library available: fetch_texel_2d_rgb_dxt1");
 }
 
 
-static void
-fetch_texel_2d_f_rgb_dxt1( const struct gl_texture_image *texImage,
-                            GLint i, GLint j, GLint k, GLfloat *texel )
+void
+_mesa_fetch_texel_2d_f_rgb_dxt1(const struct swrast_texture_image *texImage,
+                                GLint i, GLint j, GLint k, GLfloat *texel)
 {
-   /* just sample as GLchan and convert to float here */
-   GLchan rgba[4];
+   /* just sample as GLubyte and convert to float here */
+   GLubyte rgba[4];
    fetch_texel_2d_rgb_dxt1(texImage, i, j, k, rgba);
-   texel[RCOMP] = CHAN_TO_FLOAT(rgba[RCOMP]);
-   texel[GCOMP] = CHAN_TO_FLOAT(rgba[GCOMP]);
-   texel[BCOMP] = CHAN_TO_FLOAT(rgba[BCOMP]);
-   texel[ACOMP] = CHAN_TO_FLOAT(rgba[ACOMP]);
+   texel[RCOMP] = UBYTE_TO_FLOAT(rgba[RCOMP]);
+   texel[GCOMP] = UBYTE_TO_FLOAT(rgba[GCOMP]);
+   texel[BCOMP] = UBYTE_TO_FLOAT(rgba[BCOMP]);
+   texel[ACOMP] = UBYTE_TO_FLOAT(rgba[ACOMP]);
 }
 
 
 static void
-fetch_texel_2d_rgba_dxt1( const struct gl_texture_image *texImage,
-                          GLint i, GLint j, GLint k, GLchan *texel )
+fetch_texel_2d_rgba_dxt1( const struct swrast_texture_image *texImage,
+                          GLint i, GLint j, GLint k, GLubyte *texel )
 {
    (void) k;
    if (fetch_ext_rgba_dxt1) {
       fetch_ext_rgba_dxt1(texImage->RowStride,
-                          (GLubyte *)(texImage)->Data, i, j, texel);
+                          texImage->Data, i, j, texel);
    }
    else
-      _mesa_debug(NULL, "attempted to decode s3tc texture without library available\n");
+      _mesa_debug(NULL, "attempted to decode s3tc texture without library available: fetch_texel_2d_rgba_dxt1\n");
 }
 
 
-static void
-fetch_texel_2d_f_rgba_dxt1( const struct gl_texture_image *texImage,
-                            GLint i, GLint j, GLint k, GLfloat *texel )
+void
+_mesa_fetch_texel_2d_f_rgba_dxt1(const struct swrast_texture_image *texImage,
+                                 GLint i, GLint j, GLint k, GLfloat *texel)
 {
-   /* just sample as GLchan and convert to float here */
-   GLchan rgba[4];
+   /* just sample as GLubyte and convert to float here */
+   GLubyte rgba[4];
    fetch_texel_2d_rgba_dxt1(texImage, i, j, k, rgba);
-   texel[RCOMP] = CHAN_TO_FLOAT(rgba[RCOMP]);
-   texel[GCOMP] = CHAN_TO_FLOAT(rgba[GCOMP]);
-   texel[BCOMP] = CHAN_TO_FLOAT(rgba[BCOMP]);
-   texel[ACOMP] = CHAN_TO_FLOAT(rgba[ACOMP]);
+   texel[RCOMP] = UBYTE_TO_FLOAT(rgba[RCOMP]);
+   texel[GCOMP] = UBYTE_TO_FLOAT(rgba[GCOMP]);
+   texel[BCOMP] = UBYTE_TO_FLOAT(rgba[BCOMP]);
+   texel[ACOMP] = UBYTE_TO_FLOAT(rgba[ACOMP]);
 }
 
 
 static void
-fetch_texel_2d_rgba_dxt3( const struct gl_texture_image *texImage,
-                          GLint i, GLint j, GLint k, GLchan *texel )
+fetch_texel_2d_rgba_dxt3( const struct swrast_texture_image *texImage,
+                          GLint i, GLint j, GLint k, GLubyte *texel )
 {
    (void) k;
    if (fetch_ext_rgba_dxt3) {
-      ASSERT (sizeof(GLchan) == sizeof(GLubyte));
-      fetch_ext_rgba_dxt3(texImage->RowStride, (GLubyte *)(texImage)->Data,
-                          i, j, texel);
+      fetch_ext_rgba_dxt3(texImage->RowStride,
+                          texImage->Data, i, j, texel);
    }
    else
-      _mesa_debug(NULL, "attempted to decode s3tc texture without library available\n");
+      _mesa_debug(NULL, "attempted to decode s3tc texture without library available: fetch_texel_2d_rgba_dxt3\n");
 }
 
 
-static void
-fetch_texel_2d_f_rgba_dxt3( const struct gl_texture_image *texImage,
-                            GLint i, GLint j, GLint k, GLfloat *texel )
+void
+_mesa_fetch_texel_2d_f_rgba_dxt3(const struct swrast_texture_image *texImage,
+                                 GLint i, GLint j, GLint k, GLfloat *texel)
 {
-   /* just sample as GLchan and convert to float here */
-   GLchan rgba[4];
+   /* just sample as GLubyte and convert to float here */
+   GLubyte rgba[4];
    fetch_texel_2d_rgba_dxt3(texImage, i, j, k, rgba);
-   texel[RCOMP] = CHAN_TO_FLOAT(rgba[RCOMP]);
-   texel[GCOMP] = CHAN_TO_FLOAT(rgba[GCOMP]);
-   texel[BCOMP] = CHAN_TO_FLOAT(rgba[BCOMP]);
-   texel[ACOMP] = CHAN_TO_FLOAT(rgba[ACOMP]);
+   texel[RCOMP] = UBYTE_TO_FLOAT(rgba[RCOMP]);
+   texel[GCOMP] = UBYTE_TO_FLOAT(rgba[GCOMP]);
+   texel[BCOMP] = UBYTE_TO_FLOAT(rgba[BCOMP]);
+   texel[ACOMP] = UBYTE_TO_FLOAT(rgba[ACOMP]);
 }
 
 
 static void
-fetch_texel_2d_rgba_dxt5( const struct gl_texture_image *texImage,
-                          GLint i, GLint j, GLint k, GLchan *texel )
+fetch_texel_2d_rgba_dxt5( const struct swrast_texture_image *texImage,
+                          GLint i, GLint j, GLint k, GLubyte *texel )
 {
    (void) k;
    if (fetch_ext_rgba_dxt5) {
-      fetch_ext_rgba_dxt5(texImage->RowStride, (GLubyte *)(texImage)->Data,
-                          i, j, texel);
+      fetch_ext_rgba_dxt5(texImage->RowStride,
+                          texImage->Data, i, j, texel);
    }
    else
-      _mesa_debug(NULL, "attempted to decode s3tc texture without library available\n");
+      _mesa_debug(NULL, "attempted to decode s3tc texture without library available: fetch_texel_2d_rgba_dxt5\n");
 }
 
 
-static void
-fetch_texel_2d_f_rgba_dxt5( const struct gl_texture_image *texImage,
-                            GLint i, GLint j, GLint k, GLfloat *texel )
+void
+_mesa_fetch_texel_2d_f_rgba_dxt5(const struct swrast_texture_image *texImage,
+                                 GLint i, GLint j, GLint k, GLfloat *texel)
 {
-   /* just sample as GLchan and convert to float here */
-   GLchan rgba[4];
+   /* just sample as GLubyte and convert to float here */
+   GLubyte rgba[4];
    fetch_texel_2d_rgba_dxt5(texImage, i, j, k, rgba);
-   texel[RCOMP] = CHAN_TO_FLOAT(rgba[RCOMP]);
-   texel[GCOMP] = CHAN_TO_FLOAT(rgba[GCOMP]);
-   texel[BCOMP] = CHAN_TO_FLOAT(rgba[BCOMP]);
-   texel[ACOMP] = CHAN_TO_FLOAT(rgba[ACOMP]);
+   texel[RCOMP] = UBYTE_TO_FLOAT(rgba[RCOMP]);
+   texel[GCOMP] = UBYTE_TO_FLOAT(rgba[GCOMP]);
+   texel[BCOMP] = UBYTE_TO_FLOAT(rgba[BCOMP]);
+   texel[ACOMP] = UBYTE_TO_FLOAT(rgba[ACOMP]);
 }
 
 #if FEATURE_EXT_texture_sRGB
-static void
-fetch_texel_2d_f_srgb_dxt1( const struct gl_texture_image *texImage,
-                            GLint i, GLint j, GLint k, GLfloat *texel )
+void
+_mesa_fetch_texel_2d_f_srgb_dxt1( const struct swrast_texture_image *texImage,
+                                  GLint i, GLint j, GLint k, GLfloat *texel )
 {
-   /* just sample as GLchan and convert to float here */
-   GLchan rgba[4];
+   /* just sample as GLubyte and convert to float here */
+   GLubyte rgba[4];
    fetch_texel_2d_rgb_dxt1(texImage, i, j, k, rgba);
    texel[RCOMP] = nonlinear_to_linear(rgba[RCOMP]);
    texel[GCOMP] = nonlinear_to_linear(rgba[GCOMP]);
    texel[BCOMP] = nonlinear_to_linear(rgba[BCOMP]);
-   texel[ACOMP] = CHAN_TO_FLOAT(rgba[ACOMP]);
+   texel[ACOMP] = UBYTE_TO_FLOAT(rgba[ACOMP]);
 }
 
-static void
-fetch_texel_2d_f_srgba_dxt1( const struct gl_texture_image *texImage,
-                             GLint i, GLint j, GLint k, GLfloat *texel )
+void
+_mesa_fetch_texel_2d_f_srgba_dxt1(const struct swrast_texture_image *texImage,
+                                  GLint i, GLint j, GLint k, GLfloat *texel)
 {
-   /* just sample as GLchan and convert to float here */
-   GLchan rgba[4];
+   /* just sample as GLubyte and convert to float here */
+   GLubyte rgba[4];
    fetch_texel_2d_rgba_dxt1(texImage, i, j, k, rgba);
    texel[RCOMP] = nonlinear_to_linear(rgba[RCOMP]);
    texel[GCOMP] = nonlinear_to_linear(rgba[GCOMP]);
    texel[BCOMP] = nonlinear_to_linear(rgba[BCOMP]);
-   texel[ACOMP] = CHAN_TO_FLOAT(rgba[ACOMP]);
+   texel[ACOMP] = UBYTE_TO_FLOAT(rgba[ACOMP]);
 }
 
-static void
-fetch_texel_2d_f_srgba_dxt3( const struct gl_texture_image *texImage,
-                             GLint i, GLint j, GLint k, GLfloat *texel )
+void
+_mesa_fetch_texel_2d_f_srgba_dxt3(const struct swrast_texture_image *texImage,
+                                  GLint i, GLint j, GLint k, GLfloat *texel)
 {
-   /* just sample as GLchan and convert to float here */
-   GLchan rgba[4];
+   /* just sample as GLubyte and convert to float here */
+   GLubyte rgba[4];
    fetch_texel_2d_rgba_dxt3(texImage, i, j, k, rgba);
    texel[RCOMP] = nonlinear_to_linear(rgba[RCOMP]);
    texel[GCOMP] = nonlinear_to_linear(rgba[GCOMP]);
    texel[BCOMP] = nonlinear_to_linear(rgba[BCOMP]);
-   texel[ACOMP] = CHAN_TO_FLOAT(rgba[ACOMP]);
+   texel[ACOMP] = UBYTE_TO_FLOAT(rgba[ACOMP]);
 }
 
-static void
-fetch_texel_2d_f_srgba_dxt5( const struct gl_texture_image *texImage,
-                             GLint i, GLint j, GLint k, GLfloat *texel )
+void
+_mesa_fetch_texel_2d_f_srgba_dxt5(const struct swrast_texture_image *texImage,
+                                  GLint i, GLint j, GLint k, GLfloat *texel)
 {
-   /* just sample as GLchan and convert to float here */
-   GLchan rgba[4];
+   /* just sample as GLubyte and convert to float here */
+   GLubyte rgba[4];
    fetch_texel_2d_rgba_dxt5(texImage, i, j, k, rgba);
    texel[RCOMP] = nonlinear_to_linear(rgba[RCOMP]);
    texel[GCOMP] = nonlinear_to_linear(rgba[GCOMP]);
    texel[BCOMP] = nonlinear_to_linear(rgba[BCOMP]);
-   texel[ACOMP] = CHAN_TO_FLOAT(rgba[ACOMP]);
+   texel[ACOMP] = UBYTE_TO_FLOAT(rgba[ACOMP]);
 }
-#endif
+#endif /* FEATURE_EXT_texture_sRGB */
 
-const struct gl_texture_format _mesa_texformat_rgb_dxt1 = {
-   MESA_FORMAT_RGB_DXT1,               /* MesaFormat */
-   GL_RGB,                             /* BaseFormat */
-   GL_UNSIGNED_NORMALIZED_ARB,         /* DataType */
-   4, /*approx*/                       /* RedBits */
-   4, /*approx*/                       /* GreenBits */
-   4, /*approx*/                       /* BlueBits */
-   0,                                  /* AlphaBits */
-   0,                                  /* LuminanceBits */
-   0,                                  /* IntensityBits */
-   0,                                  /* IndexBits */
-   0,                                  /* DepthBits */
-   0,                                  /* StencilBits */
-   0,                                  /* TexelBytes */
-   texstore_rgb_dxt1,                  /* StoreTexImageFunc */
-   NULL, /*impossible*/                /* FetchTexel1D */
-   fetch_texel_2d_rgb_dxt1,            /* FetchTexel2D */
-   NULL, /*impossible*/                /* FetchTexel3D */
-   NULL, /*impossible*/                /* FetchTexel1Df */
-   fetch_texel_2d_f_rgb_dxt1,          /* FetchTexel2Df */
-   NULL, /*impossible*/                /* FetchTexel3Df */
-   NULL                                        /* StoreTexel */
-};
-
-const struct gl_texture_format _mesa_texformat_rgba_dxt1 = {
-   MESA_FORMAT_RGBA_DXT1,              /* MesaFormat */
-   GL_RGBA,                            /* BaseFormat */
-   GL_UNSIGNED_NORMALIZED_ARB,         /* DataType */
-   4, /*approx*/                       /* RedBits */
-   4, /*approx*/                       /* GreenBits */
-   4, /*approx*/                       /* BlueBits */
-   1, /*approx*/                       /* AlphaBits */
-   0,                                  /* LuminanceBits */
-   0,                                  /* IntensityBits */
-   0,                                  /* IndexBits */
-   0,                                  /* DepthBits */
-   0,                                  /* StencilBits */
-   0,                                  /* TexelBytes */
-   texstore_rgba_dxt1,                 /* StoreTexImageFunc */
-   NULL, /*impossible*/                /* FetchTexel1D */
-   fetch_texel_2d_rgba_dxt1,           /* FetchTexel2D */
-   NULL, /*impossible*/                /* FetchTexel3D */
-   NULL, /*impossible*/                /* FetchTexel1Df */
-   fetch_texel_2d_f_rgba_dxt1,                 /* FetchTexel2Df */
-   NULL, /*impossible*/                /* FetchTexel3Df */
-   NULL                                        /* StoreTexel */
-};
-
-const struct gl_texture_format _mesa_texformat_rgba_dxt3 = {
-   MESA_FORMAT_RGBA_DXT3,              /* MesaFormat */
-   GL_RGBA,                            /* BaseFormat */
-   GL_UNSIGNED_NORMALIZED_ARB,         /* DataType */
-   4, /*approx*/                       /* RedBits */
-   4, /*approx*/                       /* GreenBits */
-   4, /*approx*/                       /* BlueBits */
-   4, /*approx*/                       /* AlphaBits */
-   0,                                  /* LuminanceBits */
-   0,                                  /* IntensityBits */
-   0,                                  /* IndexBits */
-   0,                                  /* DepthBits */
-   0,                                  /* StencilBits */
-   0,                                  /* TexelBytes */
-   texstore_rgba_dxt3,                 /* StoreTexImageFunc */
-   NULL, /*impossible*/                /* FetchTexel1D */
-   fetch_texel_2d_rgba_dxt3,           /* FetchTexel2D */
-   NULL, /*impossible*/                /* FetchTexel3D */
-   NULL, /*impossible*/                /* FetchTexel1Df */
-   fetch_texel_2d_f_rgba_dxt3,                 /* FetchTexel2Df */
-   NULL, /*impossible*/                /* FetchTexel3Df */
-   NULL                                        /* StoreTexel */
-};
-
-const struct gl_texture_format _mesa_texformat_rgba_dxt5 = {
-   MESA_FORMAT_RGBA_DXT5,              /* MesaFormat */
-   GL_RGBA,                            /* BaseFormat */
-   GL_UNSIGNED_NORMALIZED_ARB,         /* DataType */
-   4,/*approx*/                                /* RedBits */
-   4,/*approx*/                                /* GreenBits */
-   4,/*approx*/                                /* BlueBits */
-   4,/*approx*/                                /* AlphaBits */
-   0,                                  /* LuminanceBits */
-   0,                                  /* IntensityBits */
-   0,                                  /* IndexBits */
-   0,                                  /* DepthBits */
-   0,                                  /* StencilBits */
-   0,                                  /* TexelBytes */
-   texstore_rgba_dxt5,                 /* StoreTexImageFunc */
-   NULL, /*impossible*/                /* FetchTexel1D */
-   fetch_texel_2d_rgba_dxt5,           /* FetchTexel2D */
-   NULL, /*impossible*/                /* FetchTexel3D */
-   NULL, /*impossible*/                /* FetchTexel1Df */
-   fetch_texel_2d_f_rgba_dxt5,                 /* FetchTexel2Df */
-   NULL, /*impossible*/                /* FetchTexel3Df */
-   NULL                                        /* StoreTexel */
-};
 
-#if FEATURE_EXT_texture_sRGB
-const struct gl_texture_format _mesa_texformat_srgb_dxt1 = {
-   MESA_FORMAT_SRGB_DXT1,              /* MesaFormat */
-   GL_RGB,                             /* BaseFormat */
-   GL_UNSIGNED_NORMALIZED_ARB,         /* DataType */
-   4, /*approx*/                       /* RedBits */
-   4, /*approx*/                       /* GreenBits */
-   4, /*approx*/                       /* BlueBits */
-   0,                                  /* AlphaBits */
-   0,                                  /* LuminanceBits */
-   0,                                  /* IntensityBits */
-   0,                                  /* IndexBits */
-   0,                                  /* DepthBits */
-   0,                                  /* StencilBits */
-   0,                                  /* TexelBytes */
-   texstore_rgb_dxt1,                  /* StoreTexImageFunc */
-   NULL, /*impossible*/                /* FetchTexel1D */
-   NULL,                               /* FetchTexel2D */
-   NULL, /*impossible*/                /* FetchTexel3D */
-   NULL, /*impossible*/                /* FetchTexel1Df */
-   fetch_texel_2d_f_srgb_dxt1,                 /* FetchTexel2Df */
-   NULL, /*impossible*/                /* FetchTexel3Df */
-   NULL                                        /* StoreTexel */
-};
-
-const struct gl_texture_format _mesa_texformat_srgba_dxt1 = {
-   MESA_FORMAT_SRGBA_DXT1,             /* MesaFormat */
-   GL_RGBA,                            /* BaseFormat */
-   GL_UNSIGNED_NORMALIZED_ARB,         /* DataType */
-   4, /*approx*/                       /* RedBits */
-   4, /*approx*/                       /* GreenBits */
-   4, /*approx*/                       /* BlueBits */
-   1, /*approx*/                       /* AlphaBits */
-   0,                                  /* LuminanceBits */
-   0,                                  /* IntensityBits */
-   0,                                  /* IndexBits */
-   0,                                  /* DepthBits */
-   0,                                  /* StencilBits */
-   0,                                  /* TexelBytes */
-   texstore_rgba_dxt1,                 /* StoreTexImageFunc */
-   NULL, /*impossible*/                /* FetchTexel1D */
-   NULL,                               /* FetchTexel2D */
-   NULL, /*impossible*/                /* FetchTexel3D */
-   NULL, /*impossible*/                /* FetchTexel1Df */
-   fetch_texel_2d_f_srgba_dxt1,        /* FetchTexel2Df */
-   NULL, /*impossible*/                /* FetchTexel3Df */
-   NULL                                        /* StoreTexel */
-};
-
-const struct gl_texture_format _mesa_texformat_srgba_dxt3 = {
-   MESA_FORMAT_SRGBA_DXT3,             /* MesaFormat */
-   GL_RGBA,                            /* BaseFormat */
-   GL_UNSIGNED_NORMALIZED_ARB,         /* DataType */
-   4, /*approx*/                       /* RedBits */
-   4, /*approx*/                       /* GreenBits */
-   4, /*approx*/                       /* BlueBits */
-   4, /*approx*/                       /* AlphaBits */
-   0,                                  /* LuminanceBits */
-   0,                                  /* IntensityBits */
-   0,                                  /* IndexBits */
-   0,                                  /* DepthBits */
-   0,                                  /* StencilBits */
-   0,                                  /* TexelBytes */
-   texstore_rgba_dxt3,                 /* StoreTexImageFunc */
-   NULL, /*impossible*/                /* FetchTexel1D */
-   NULL,                               /* FetchTexel2D */
-   NULL, /*impossible*/                /* FetchTexel3D */
-   NULL, /*impossible*/                /* FetchTexel1Df */
-   fetch_texel_2d_f_srgba_dxt3,        /* FetchTexel2Df */
-   NULL, /*impossible*/                /* FetchTexel3Df */
-   NULL                                        /* StoreTexel */
-};
-
-const struct gl_texture_format _mesa_texformat_srgba_dxt5 = {
-   MESA_FORMAT_SRGBA_DXT5,             /* MesaFormat */
-   GL_RGBA,                            /* BaseFormat */
-   GL_UNSIGNED_NORMALIZED_ARB,         /* DataType */
-   4,/*approx*/                                /* RedBits */
-   4,/*approx*/                                /* GreenBits */
-   4,/*approx*/                                /* BlueBits */
-   4,/*approx*/                                /* AlphaBits */
-   0,                                  /* LuminanceBits */
-   0,                                  /* IntensityBits */
-   0,                                  /* IndexBits */
-   0,                                  /* DepthBits */
-   0,                                  /* StencilBits */
-   0,                                  /* TexelBytes */
-   texstore_rgba_dxt5,                 /* StoreTexImageFunc */
-   NULL, /*impossible*/                /* FetchTexel1D */
-   NULL,                               /* FetchTexel2D */
-   NULL, /*impossible*/                /* FetchTexel3D */
-   NULL, /*impossible*/                /* FetchTexel1Df */
-   fetch_texel_2d_f_srgba_dxt5,        /* FetchTexel2Df */
-   NULL, /*impossible*/                /* FetchTexel3Df */
-   NULL                                        /* StoreTexel */
-};
-#endif
+#endif /* FEATURE_texture_s3tc */